#!/bin/bash

# Directory to search for markdown files (content folder)
search_dir="../content"

# Function to check and update frontmatter with the latest date
update_frontmatter() {
  local file="$1"

  # Check if the file contains frontmatter with +++ delimiters
  if grep -qE '^\+\+\+' "$file"; then
    # Extract frontmatter from the file (between +++ markers)
    frontmatter=$(sed -n '/^\+\+\+/,/^\+\+\+/p' "$file")

    # Check if there's a 'date' field in the frontmatter
    if echo "$frontmatter" | grep -qE 'date\s*='; then
      # Check if there's already an 'updated' field in the frontmatter
      if echo "$frontmatter" | grep -qE 'updated\s*='; then
        echo "✘ Skipped: 'updated' field already present in $file"
        return
      fi

      # Get the current modification time of the file (formatted as YYYY-MM-DD)
      last_modified=$(date -r "$file" "+%Y-%m-%d")

      # Update the frontmatter by adding the updated date below the 'date = ' line
      sed -i "/^\+\+\+/ {n;s/$/\nupdated = $last_modified/}" "$file"

      echo "✔ Updated frontmatter in $file"
    else
      echo "✘ No date field found in the frontmatter of $file"
    fi
  else
    echo "✘ No frontmatter found in $file"
  fi
}

# Recursively find all markdown files in the content folder and apply the update
find "$search_dir" -type f -name "*.md" | while read file; do
  update_frontmatter "$file"
done